pango:layout-line-readonly (layout line)

layout -- a pango:layout object
line -- an integer for the index of a line, which must be between 0 and (pango:layout-line-count layout) - 1, inclusive

The requested pango:layout-line instance, or nil if the index is out of range. This Pango layout line will become invalid if changes are made to the PangoLayout. No changes should be made to the line.

Retrieves a particular line from a Pango layout. This is a faster alternative to the pango:layout-line function, but the user is not expected to modify the contents of the line (glyphs, glyph widths, and so on).